# Calculate Total Sales With An Array Formula

If we had to calculate Total Sales the normal way, we would have to create a ‘helper column’ for the Totals column and then enter a formula to Sum all the Totals.

Consider this classic example tabulated below, usually we would need a 4th column to total each row, then sum the totals. But, with the use of an array formula we can do this without those helper columns.

### Entering the Array Formula

An array formula allow us to compute multiple ranges without the need for helper columns.

** Remember:** instead of pressing enter after typing the formula, you need to hold down

**then press**

`Ctrl + Shift`

`Enter`

```
' formula syntax
{=SUM(Units_Sold * Unit_Price)}
' formula
{=SUM(B2:B5*C2:C5)}
' result: total sales
$443,599
```

### Sample Data

~ | A |
B |
C |
---|---|---|---|

1 |
Product |
Units Sold |
Unit Price |

2 |
Laptops | 87 | 788 |

3 |
Tablets | 268 | 651 |

4 |
Mobiles | 541 | 325 |

5 |
PC | 55 | 450 |

### Normal Formula:

This is what you would normally have to do:

- Extra totals column: Column D
- Totals column to multiply Units Sold by Unit Price
- Sum the Total Sales

~ | A |
B |
C |
D |
---|---|---|---|---|

1 |
Product |
Units Sold |
Unit Price |
Total |

2 |
Laptops | 87 | 788 | 68,556 |

3 |
Tablets | 268 | 651 | 174,468 |

4 |
Mobiles | 541 | 325 | 175,825 |

5 |
PC | 55 | 450 | 24,750 |

6 |
Total Sales |
443,599 |